Manuel J. Castillo

Physical fitness levels among European adolescents: the HELENA study

Francisco B. Ortega, Enrique G. Artero, Jonatan R. Ruiz et al. · British Journal of Sports Medicine · 2009 · 473 citations

Education, Kinesiology, Adolescent Health +16

Reliability of health-related physical fitness tests in European adolescents. The HELENA Study

Francisco B. Ortega, Enrique G. Artero, Jonatan R. Ruiz et al. · International Journal of Obesity · 2008 · 345 citations

Education, Health Sciences, Kinesiology +16

Objectively Measured Physical Activity and Sedentary Time in European Adolescents: The HELENA Study

Jonatan R. Ruiz, Francisco B. Ortega, David Martínez‐Gómez et al. · American Journal of Epidemiology · 2011 · 332 citations

Education, Child Health, Adolescent Health +14

The International Fitness Scale (IFIS): usefulness of self-reported fitness in youth

Francisco B. Ortega, Jonatan R. Ruiz, Vanesa España‐Romero et al. · International Journal of Epidemiology · 2011 · 271 citations · Full text

Education, Health Promotion, Adolescent Health +14

Hand size influences optimal grip span in women but not in men

Jonatan R. Ruiz, José Luis Mesa Mesa, Ángel Gutiérrez et al. · The Journal Of Hand Surgery · 2002 · 262 citations

Engineering, Rehabilitation Medicine, Grasping +8